add cargo caching

.github/workflows/ci.yml

@@ -19,7 +19,8 @@ jobs:
         os: ['ubuntu-latest', 'windows-latest', 'macos-latest']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v4
+    - name: Check out repository
+      uses: actions/checkout@v4
 
     - name: Set up Node.js
       uses: actions/setup-node@v4
@@ -39,6 +40,20 @@ jobs:
         python -m pip install --upgrade pip
         pip install matplotlib maturin
 
+    - name: Set up Rust caching
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/bin/
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+          target/
+        key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
+          ${{ runner.os }}-cargo
+
     - name: Set up stable Rust
       run: rustup toolchain install stable
 
@@ -220,7 +235,9 @@ jobs:
   release:
     name: Release
     runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/')
+    if: |
+      startsWith(github.ref, 'refs/tags/') &&
+      github.repository == 'apparebit/prettypretty'
     needs: [linux, musllinux, windows, macos, sdist]
     permissions:
       id-token: write